Help me find a longer middle for Blythe!

My first baby is due in Sept and Blythe is right near the top our list if bub is a girl. I'm looking for a longer (ideally 3 syll) middle to go with it. Suggestions please! Also, what is the general opinion on BlytheElspeth? Though only 2 syll, it's my favourite so far but I'm not sure if all the th's make it weird. Thanks for your input!